Eric Dumazet 89c4b442b7 netpoll: more efficient locking ...

Callers of netpoll_poll_lock() own NAPI_STATE_SCHED

Callers of netpoll_poll_unlock() have BH blocked between
the NAPI_STATE_SCHED being cleared and poll_lock is released.

We can avoid the spinlock which has no contention, and use cmpxchg()
on poll_owner which we need to set anyway.

This removes a possible lockdep violation after the cited commit,
since sk_busy_loop() re-enables BH before calling busy_poll_stop()

Fixes: 217f697436 ("net: busy-poll: allow preemption in sk_busy_loop()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2016-11-16 18:32:02 -05:00

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acpi

Merge branches 'acpi-wdat' and 'acpi-cppc'

2016-10-21 22:24:23 +02:00

asm-generic

mm: kmemleak: scan .data.ro_after_init

2016-11-11 08:12:37 -08:00

clocksource

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crypto

Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2016-10-10 11:19:47 +08:00

drm

drm: Don't force all planes to be added to the state due to zpos

2016-10-26 18:48:05 +02:00

dt-bindings

net: phy: Cleanup the Edge-Rate feature in Microsemi PHYs.

2016-10-14 10:06:13 -04:00

keys

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kvm

ARM: KVM: Support vgic-v3

2016-09-22 13:22:21 +02:00

linux

netpoll: more efficient locking

2016-11-16 18:32:02 -05:00

math-emu

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media

Merge tag 'v4.8' into patchwork

2016-10-05 16:43:53 -03:00

memory

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misc

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net

lwtunnel: subtract tunnel headroom from mtu on output redirect

2016-11-16 17:01:15 -05:00

pcmcia

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ras

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rdma

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

2016-10-09 17:04:33 -07:00

rxrpc

rxrpc: Add tracepoint for ACK proposal

2016-09-23 15:49:19 +01:00

scsi

Merge remote-tracking branch 'mkp-scsi/4.8/scsi-fixes' into fixes

2016-09-27 22:30:51 -07:00

soc

Merge tag 'powerpc-4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2016-10-14 11:07:42 -07:00

sound

Merge tag 'asoc-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

2016-09-30 18:40:40 +02:00

target

target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLE

2016-10-19 21:22:32 -07:00

trace

Merge branch 'for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2016-10-14 12:18:50 -07:00

uapi

bpf: Add BPF_MAP_TYPE_LRU_PERCPU_HASH

2016-11-15 11:50:20 -05:00

video

Merge tag 'fbdev-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux

2016-10-12 11:01:37 -07:00

xen

Merge tag 'for-linus-4.9-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2016-10-06 11:19:10 -07:00

Kbuild

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